Please Help!! A survey was given to a random sample of voters in the United States to ask about their preference for a presidential candidate. The percentage of people who said they preferred Candidate A was 21%. The margin of error for the survey was 4.5%. Write a confidence interval for the percentage of the population that supports Candidate A. (Write these in interval notation using parenthesis, and be sure to include the % symbol.) *
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If f(x)=3x+1 and f^-1=x-1/3, then f^-1(7)=

Solve the following inequalities and show the solution on a number line. 3/4 (2x-7) ≤ 5

Someone answer asap for ! max recorded the heights of 500 male humans. he found that the heights were normally distributed around a mean of 177 centimeters. which statements about max’s data must be true? a. the median of max’s data is 250 b. more than half of the data points max recorded were 177 centimeters. c. a data point chosen at random is as likely to be above the mean as it is to be below the mean. d. every height within three standard deviations of the mean is equally likely to be chosen if a data point is selected at random.